Add patch for handling empty simulator lists.

Author: freakboy3742

patch/Python/Python.patch

@@ -1271,10 +1271,53 @@ index c3e261ecd9e..26ef7a95de4 100644
  	<array>
  		<string>iPhoneOS</string>
 diff --git a/iOS/testbed/__main__.py b/iOS/testbed/__main__.py
-index b4499f5ac17..08fbe90a1c6 100644
+index b4499f5ac17..d12a5ab065b 100644
 --- a/iOS/testbed/__main__.py
 +++ b/iOS/testbed/__main__.py
-@@ -230,33 +230,69 @@
+@@ -82,19 +82,29 @@
+ 
+ # Return a list of UDIDs associated with booted simulators
+ async def list_devices():
+-    # List the testing simulators, in JSON format
+-    raw_json = await async_check_output(
+-        "xcrun", "simctl", "--set", "testing", "list", "-j"
+-    )
+-    json_data = json.loads(raw_json)
+-
+-    # Filter out the booted iOS simulators
+-    return [
+-        simulator["udid"]
+-        for runtime, simulators in json_data["devices"].items()
+-        for simulator in simulators
+-        if runtime.split(".")[-1].startswith("iOS") and simulator["state"] == "Booted"
+-    ]
++    try:
++        # List the testing simulators, in JSON format
++        raw_json = await async_check_output(
++            "xcrun", "simctl", "--set", "testing", "list", "-j"
++        )
++        json_data = json.loads(raw_json)
++
++        # Filter out the booted iOS simulators
++        return [
++            simulator["udid"]
++            for runtime, simulators in json_data["devices"].items()
++            for simulator in simulators
++            if runtime.split(".")[-1].startswith("iOS") and simulator["state"] == "Booted"
++        ]
++    except subprocess.CalledProcessError as e:
++        # If there's no ~/Library/Developer/XCTestDevices folder (which is the
++        # case on fresh installs, and in some CI environments), `simctl list`
++        # returns error code 1, rather than an empty list. Handle that case,
++        # but raise all other errors.
++        if e.returncode == 1:
++            return []
++        else:
++            raise
+ 
+ 
+ async def find_device(initial_devices):
+@@ -230,33 +240,69 @@
      shutil.copytree(source, target, symlinks=True)
      print(" done")
 
@@ -1351,7 +1394,7 @@ index b4499f5ac17..08fbe90a1c6 100644
 
      for app_src in apps:
          print(f"  Installing app {app_src.name!r}...", end="", flush=True)
-@@ -372,8 +408,8 @@
+@@ -372,8 +418,8 @@
 
      if context.subcommand == "clone":
          clone_testbed(